'Real' PanScan Mode
 

I am currently writing a tool to add pan-scan information to MPEG files, but I can't find a player which I can use to test the re-encoded files.

I may be wrong but it seems like BSplayer ignores the pan-scan info and just displays the center section of the video.

Could a pan-scan mode be added which would read the information in the MPEG fields:

display_vertical_size
display_horizontal_size
frame_centre_vertical_offset
frame_centre_horizontal_offset

and display the video within this window.

cheers.

Could you send me some sample file ?
Or upload it to
ftp bsplayer.org u:bsp, p:upload

I have uploaded two files, NTSC_16x9_No_PanScan.mpg and NTSC_16x9_PanScan.mpg.

Unfortunately I don't yet have any MPEGs with the frame_centre_vertical_offset and frame_centre_horizontal_offset values set, but as soon as I have them, I can pass them on to you (if you need them).

NTSC_16x9_No_PanScan.mpg is 720 x 480 and has display_horizontal_size set to 720 in the sequence_display_extension.

NTSC_16x9_PanScan.mpg is also 720 x 480 but has display_horizontal_size set to 480 in the sequence_display_extension.


P.S.
I uploaded a little utility for viewing the MPEG fields, it needs .NET framework 1.1 to run.

Bst,

I now have MPEG files with full pan-scan information encoded within them. I tried to upload one of them to you, but the login above is no longer valid.

Let me know if you are interested.

hi gairs

do you have plans to add such infos to mp4 files too?

I don't know much about MP4. If it's not much of a task, then I will probably do it.

hm, i dont think so :)

check out the 3ivx vfw codec!
it already supports adding an AR to .avi, when you mux this .avi with the 3ivx directshow muxer you will get a spec compliant (!) .mp4 files which has the AR stored inside
during playback it gets resized properly of course

PanScan is really useful! :D
But I think the changes on the image should also be written to the overlay so it would show the Pan-Scan effect on the TV Screen too! :D
Currently it doesn't do that... It only appears on the PC Monitor, but on the TV Screen it just show the movie normally (without PanScan)! :(